Yazaki Corporation

Hatsushi Akamine

Yasuhiro Nagasaka

Daisuke Kanemori

Yoshiyuki Iwamoto

A special sound producing device which is loaded in a vehicle, and provides information to a vehicle crew by a special sound, includes a plurality of speakers which become the power sources of the special sound, and a control unit which generates frequency signals to make the special sound output from the plurality of speakers respectively, wherein when one information to be transmitted to the vehicle crew is transmitted by the special sound from the plurality of speakers, the control unit makes the frequencies of the frequency signals, the sound pressures of the special sound or the output timings to the speakers of the frequency signals to be different among the plurality of speakers.

Special sound producing device

An operation-sound generator which can output an operation-sound similar to a hit-sound of a mechanical relay with sound pressure in which a driver is recognizable is provided. A microcomputer supplies a plurality of first pulse sequences to the buzzer at intervals during a lighting period of turning on the direction indicator lamp or the hazard lamp, each of the first pulse sequences having a pulse number differing from each other, a same pulse width, and a same duty, in an order gradually reducing the pulse number. The pulse number of each of the first pulse sequences is set so that the output of each of the first pulse sequences is finished before stationary vibration of the buzzer is performed. Furthermore, after the output of the first pulse sequence is finished, the microcomputer starts the output of next the first pulse sequence before the vibration of the buzzer is stopped.

Operation-sound generator

In a vehicle display device having displays fitted in a grained panel of an instrument panel of a vehicle and serving to emit a display light to an outside during lighting, a front face of each of the displays is covered with a screen having a grained pattern which is provided with a large number of minute holes capable of transmitting the display light. Consequently, a screen can be seen through the minute holes of the screen when the display is turned on, while the display is hidden by the grained screen when the display is turned off. Therefore, the whole portion including the part having the display fitted therein is unified to be grained.

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Makinohara, Japan

Hatsushi Akamine